|1951||Towa Pharmaceutical Company establishes at Awaji-cho, Higashi-ku, Osaka.|
|1957||Upon relocation to Dosho-machi, Higashi-ku, Osaka, Towa Pharmaceutical Co., Ltd (abbreviated as Towa) is established and incorporated.
The Gamo Plant is constructed at Gamo-cho, Jyoto-ku, Osaka.
Neyagawa Plant is constructed at Kamikamida, Neyagawa, Osaka.
Gamo Plant is closed and unified to Neyagawa Plant.
|1974||Towa moves its corporate headquarters to new office in Matsuo-cho, Kadoma, Osaka.|
|1975||The Kadoma Plant is constructed at Kuwazai-shinmachi, Kadoma, Osaka.|
|1978||The Osaka Plant is constructed at the headquarters site.
Neyagawa Plant is unified to Osaka Plant and Kadoma Plant.
Kadoma Laboratory is constructed at Kuwazai-shinmachi, Kadoma, Osaka.
Distribution Center is constructed in Fukata-cho, Kadoma, Osaka.
|1982||Osaka Plant Annex is constructed at Yanagida-cho, Kadoma, Osaka.
Kadoma Laboratory enlarges to conform to GLP.
|1983||The Okayama Plant is constructed at the Shoo Industrial Park in Okayama.|
|1984||Towa acquires Beppu Hot Spring Science Institute Ltd., renames it Oita Plant, and starts manufacturing injections there.|
|1987||Kadoma Plant is closed and unified to Osaka Plant and Okayama Plant.|
|1989||Three sales company, Towa Pharmaceutical Sales Co., Ltd., Hanshin Towa Pharmaceutical Sales Co., Ltd., and Towa Pharmaceutical Tokyo sales Co., Ltd. are consolidated.|
|1994||Towa's shares are listed on the over-the-counter market of the Japan Securities Dealers Association.|
|1995||Distribution center is constructed in the Okayama Plant site.|
|1997||Towa moves its corporate headquarters to newly built office in Shinbashi-cho, Kadoma, Osaka.|
|1998||Osaka Research Center and Osaka Distribution Center are constructed at Ichiban-cho, Kadoma, Osaka.
Towa purchases Mect Co., Ltd.'s Tohoku Plant, re-opens it as Yamagata Daiichi Plant.
|2003||Towa purchases J-Dolph Co., Ltd.（currently known as J-DOLPH Pharmaceutical CO., LTD.）, and makes it subsidiary.|
|2004||Towa's shares are listed on the second of Tokyo Stock Exchange (TSE).|
|2005||Listing of Towa's share transfers to the first section of TSE.|
|2006||Osaka Daini Plant is closed and unified to the Osaka plant which is constructed at Matsuo-cho, Kadoma, Japan.|
|2009||Oita Plant is closed and unified to the Okayama plant.|
|2010||Towa purchases Daichi Kasei Co., Ltd., and makes it subsidiary.|
|2012||Yamagata Plant is constructed at Kaminoyama, Yamagata.
East Japan Distribution Center is constructed at Kaminoyama, Yamagata.
West Japan Distribution Center is constructed at the Shoo Industrial Park in Okayama.
Osaka and Okayama Distribution Center are closed.
|2014||Yamagata Daiichi Plant is closed.|
|2016||Established Greencaps Pharmacetical Co.,Ltd. JV with Sankyo Co., Ltd.|
|2017||East Japan Distribution Center is moved and constructed at Yamagata, Yamagata.|
|2018||Established T Square Solutions CO., LTD. JV with TIS Co., Ltd.|
|2020||Towa purchases Pensa Investments, S.L.（currently known as Towa Pharma International Holdings, S.L.）, and makes it subsidiary.|
|2021||Towa purchases Protosera Inc. and makes it subsidiary.|
|2022||Towa purchases Susho Pharmaceutical Co., Ltd. and makes it subsidiary.|
|2009||"Amlodipine OD tablet 'Towa'"wins the Generic Drug of the Year 2009 Award.|
|2010||"Levofloxacin oral solution 25mg/mL 'Towa'" wins "2010 Excellent Generic Promotion Award."
"RACTAB Technologies" wins "Asahi Kasei Encouragement Award of Pharmaceutics" from Academy of Pharmaceutical Science and Technology.
|2012||"Elpinan DS for pediatric 1%" wins the Generic Drug of the Year 2012 Award.
"RACTAB Technologies" wins the Good Design Award 2012.
|2013||"Paroxetine OD tablet 10mg/20mg 'Towa'" wins "2013 Excellent Generic Promotion Award."|